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Finding the Fourth Proportional to 3,840.99, 5,761.62 and 1,067.64

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Solution

The fourth proportional to 3,840.99, 5,761.62 and 1,067.64 is: 1,601.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.99 : 5,761.62 = 1,067.64 : x
  2. Step 2: Convert to fraction form
    3,840.99/5,761.62 = 1,067.64/x
  3. Step 3: Cross multiply
    3,840.99x = 5,761.62 × 1,067.64
  4. Step 4: Simplify right side
    3,840.99x = 6,151,335.98
  5. Step 5: Solve for x
    x = 6,151,335.98/3,840.99
  6. Step 6: Final answer
    x = 1,601.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.